cleanup (#426)

- remove unused `Options` type
- use `expected_trust()` function consistently

Author: Byron

git-discover/src/lib.rs

@@ -28,9 +28,6 @@ pub mod is_git {
         #[error(transparent)]
         GitFile(#[from] crate::path::from_gitdir_file::Error),
     }
-
-    /// Options for [`crate::is_git()`].
-    pub struct Options {}
 }
 
 mod is;

git-discover/tests/upwards/mod.rs

@@ -94,7 +94,7 @@ fn from_dir_with_dot_dot() -> crate::Result {
         working_dir.canonicalize()?,
         "a relative path that climbs above the test repo should yield the gitoxide repo"
     );
-    assert_eq!(trust, git_sec::Trust::Full);
+    assert_eq!(trust, expected_trust());
     Ok(())
 }